Center shaft putter head



FIG. 1 is a front view of a center shaft putter head showing my new design;

FIG. 2 is a left side view thereof;

FIG. 3 is a top view thereof;

FIG. 4 is a right side view thereof; and

FIG. 5 is a bottom view thereof. 

The ornamental design for a center shaft putter head, as shown and described. 